Knob for a control lever



FIG. 1 is a front perspective view of a knob for a control lever according to our new design;

FIG. 2 is a top plan view thereof;

FIG. 3 is a left elevational view thereof;

FIG. 4 is a rear elevational view thereof;

FIG. 5 is a right elevational view thereof;

FIG. 6 is a front elevational view thereof; and,

FIG. 7 is a bottom plan view thereof.

The broken lines are shown for illustrative purposes only and form no part of the claimed design. 

The ornamental design for a knob for a control lever, as shown and described. 